Rotary fluid compressor, exhauster, mover, or engine



V w. a HAY. ROTARY FLUID COMPRESSOR, EXHAUSTER, MOVER, OR ENGINE.APPLKCATXON FILED OCT 25. I919.

1,367,256. Patented Feb. 1,1921. 1

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HAY.

ROTARY FLUID COMPRESSOR, EXHAUSTER, MOVER, 0R ENGINE.

APPLICATION FILED OCT- 25 l9l9.

2 SHEETS-SHEET 2- Patented Feb. 1,1921.

UNITED STATES WILLIAM G. BAY, OF MANCHESTER, LANCASTER, ENGLAND.

ROTARY FLUID COMPRESSOR, EXHAUSTER, MOVER, OR ENGINE,

memos.

i111ecifiuiati'uinv of Letters Patent.

Patented Feb. 1, 1921.

Application filed October 25, 1913; Serial No. 333,146.

To all whom it may concern:

Ee it known that I, WILLIAM Gnonon HAY, a subject of the King oi GreatBritain residing at Manchester, in the county of ham caster, England,have invented certain use full improvements Relating to Rotary FluidCompressors, Exhausters, Movers, or Engines, of which the following is aspecification.

This invention relates to rotary fluid compressors, exhausters, moversor engines generally of the type wherein a rotor is mountedeccentrically in a stationary casing and vanes are provided adapted tomove relatively to the rotor, and is more particularly applicable torotary blowers or air compres sors, eiihausters or movers.

The main object of my invention is to increase the efficiency oi?compressors, exhaust ers, movers or engines of saidtype by adapting themto run at much greater speeds than hitherto, without occasioningfriction and wear between the vanes and the casing. Another object is toincrease the smoothness oi running and reduce vibration to a minimum. Athird object is to facilitate manu, tacture of such compressors,exhausters or movers and to render it possible to readily lubricate allmoving parts, thereby reducing friction generally. A further object isto provide a construction in which the e'illciency oi the parts remainsunaflccted by the action of solid matter drawn in a state of suspensioninto the machine.

According to my invention, in a rotary fluid compressor, exhauster,mover or engine of the specificdtype, the vanes are oscillata hly orslidably mounted in therotor and are so formed and connected toconnecting rods rotatable about the axis of the casing that a constantlyequal, predeterminable clearance is obtained between the cylinder and.the wane surfaces courting therewith to form a p r ial or complet sea inal p sitions of the vanes. y

The rotor is formedhollow and the vanes are constructed hollow with openinner ends, the connecting rods being situated in the chamber formed bythe rotor and vanes.

in order to balance the vanes and connectring rods, counter weights mayin some cases be mounted to oscillate about the rotor axis and beoperatively connected to the vanes in such a manner that movement of thevanes away from the rotor axis, causes the counter weights to move tothe opposite side of the axis and thereby balance the centrifugal action exerted on the connecting rods and vanes.

l attain the recited objects by the mechanism illustrated in theaccompanying two sheets of drawings. Q

Figure 1 is a view in vertical section on 11116 'l-1 of Fig. 2 and i iFig. 2 is a view-in vertical section through the axis of the machine,the two figures illustrating one construction.

Fig. .3 is a view in vertical section on line 3+3 ofFigd and i Fig. 41;is a view in vertical section on line l-4.- of F ig. 3 looking in thedirection of the arrow, and illustrate a second construction.

Similar letters and numerals refer to simi lar parts throughout theseveral views.

In the construction illustrated in Figs. 1 and 2 of the drawings, whichis particularly adapted to deal with clean or dust free air, the rotor ais formed hollow and with radially disposed slots 6 containing slidingvanes c. Eachvane c is of rectangular cross seetion and is made asliding fit in its slot and of box formation with Y the interior of thehollow rotor. One end of a connecting rod 05 extends into each hollowvane and is oscillatably connected thereto at e near its outer end,preferably by a ball bearing as shown. The axis a of oscillation of theconnecting rod is parallel with the rotor or cylinder axis and thesurface of the vane c which cooperates with' the cylinder periphery isformed concentric with the axis 0 of oscillation. The other end of eachconnecting rod (Z is rotatably mounted, pref: erably by means of a ballhearing as shown concentrically to the machine casing g and projectinginto the hollow rotor 11 through an aperture h formed in one sidethereof. herea e thu tw onnecting o s d, b th connected to thestationary spindle f and each connectedto one of the sliding vanesc.

The rotor a may be mounted to rotate on a it inner end open to i 1" on astationary stud or spindle f secured connection, with the result thatthe part of the working surface momentarily cooperatinder g by aconstant distance which can be fixed by suitably proportioning theconnecting rods d.

- The bearings of the inner ends of the connecting rods (Z may bereadily lubricated by providing the fixed stud or spindle f with apassage is or grease tube'through which grease can be injected from theexterior of the casing g. The sliding vanes 0 may be lubricated byforming overhung annular ribs Z on the sides of the rotor at andproviding passages m in the casing g from the exterior to parts insidethe casing 9 where the overhung ribs Z can catch lubricant fallingtherefrom. Passages n are pro- I vided which lead from the overhunginner 'with hollow interior thereof.

periphery of the ribs Z to annular grooves 0 leading to the inner endsof the slots 6 containing the vanes a. The connecting rods (5 may beprovidedwith passages 12 or tubes to conduct to the outer ends thereof apor-* tion of the grease iniected through the stationary stud or spindleIn the construction of blower illustrated in Figs. 3 and 1- and moreparticularly adapted for dealing with dust or the like laden air,therotor a is again hollow and provided with slots 5 which communicateEach vane c is of box formation with its interior open to the hollowinterior of the rotor a is osc latably mounted at g, g in one of therotor slots 6, the axis of oscillation being parallel with the axis ofthe cylinder 9 or rotor (6. A connecting rod 03'. projects into the vane0 and is oscillatably connected to the same near its outer end at r, theaxis of osciliation again being parallel with the axis of the cylinder 9or rotor a. The part 8 of the vane surface which cooperates with theperiphery of the cylinder 9 is situated in proximity to the connectingrod d and is concentric with the axis r of oscillation of such rod. Thissurface iszcontinued inward, the continuation t being concentric withthe axis 9 of oscillation of the vane c and in sliding contact with oneside of its slot 6. The surface is continued in the direction of theaxis 9 of oscillation of the vane, and is prolonged inwardly,theprolongation at being concentric'with the axis 9 and forming asliding fit with theother side of its slot 6. This sur- 'faceislcompleted to form the vane by two parallel walls '2) which are insliding con tact with the remaining two sides-of the slot .7) and thesides of the casing g. The connect-ingrods d are rotatably mounted.preferably by means of ball bearings as shown, on a stud w concentricwith the cylinder ca sing 9 and situated inside the rotor a. In order toinsure a tight joint between the ends of the vanes c and the rotor at,the relng with the cylinder 9 always clears the cylspective sides of theslot 6 have white metal a: or the like cast into suitable undercut slotstherein for the ends of the vanes c to slide on.

The stud w on which the connecting rods d rotate may form part of acrank g on the end of a stationary shaft 2 secured to the casing gconcentric with the rotor a, and partially supported by a ball bearing 5on the rotor a.

For the purpose of balancing the parts described with reference to thesecond construction, I may employ the following device, but it will beappreciated that such device is not essential in all cases:

At a point intermediate between each connecting rod (3 and vane axis g,I connect one end of a link 6 to each vane, and connect the other endthereof to one arm of a lever T cs'rillatably mounted on a stud S orspindle concentric with the axis of the rotor a. The other arm of thelever 7 carries a counter weight 18. In operation, the outward or inwardmovement of the vane c on one side of the axis of the rotor a produces acorresponding movement of the counter weight 8 at the other side of saidaxis. the forces set up by centrifugal action on the vane c and partsmoving therewith being thereby counter balanced by the forces set up bysuch action on the counter weight 18, which of course act in oppositedirection to the first named forces.

All the moving parts described with ref erence to the second namedconstruction may be lubricated by forming suitable passages 11 in thecasing (7, and a passage 12 in fixed shaft 2. and cranked stud 7 w, andproviding lubricator tubes 9 to the outer ends of the connecting rods(17', the inlet ends of the tubes being led to the sides of the rotor 01where lubricant can be injected through a passage 10 provided therein.

I claim:

1. A rotary fluid compressor, exhauster mover or engine, comprising incombination, a cylindrical casing; a hollow cylindrical rotoreccentrically mounted therein; vane slots in said rotor; hollow vanesmovable in said slots; means mounted co-axial with said casing toproject into the interior of the hollow rotor and form a rigid axis; andmembers connecting the hollow vanes to said means; and working surfaceson the hollow vanes concentric with the point of connection of saidmembers to said vanes.

2. A rotary fluid compressor, exhauster, mover or engine, comprising incombination, a cylindrical casing; a hollow cylindrical rotoreccentrically mounted therein; vane slots in said rotor extending fromthe interior to the exterior thereof; hollow vanes movably mounted insaid slots with open ends communicating with the interior of the rotor;a stud rigidly connected to the cylindrical casing coaxial with saidcasing; a plurality of connecting rods all rotatably mounted at one endon said stud and each extending into and oscillatably connected to theinterior of one hollow vane;.and working surfaces on said vanes, allparts of which are radially equidistant from the line of connection oftherespective vane with its connecting rod.

3. A rotary fluid compressor, exhauster, mover or engine, comprising incombination, a cylindrical casing; a rotor eccentrically mountedtherein; vane slots in said rotor; vanes movable in said slots; a membermounted co-axially with the cylindrical casing; means connecting saidvanes to said member; a member arranged co-axially with the rotor; andcounter weights revoluble on the last named member and linlred to saidvanes; said counter weights being adapted to set up centrifugal forcessubstantially equal to but oppositely directed to those set up by saidvanes.

4. A rotary fluid compressor, exhauster, mover or engine, comprising incombination a cylindrical casing; a hollow rotor eccentrically mountedtherein; movable vanes on said rotor; a stationary stud on saidcylindrical casing; ball bearings on said stud; connecting rods mountedon said ball bearings; a ball bearing on each vane connect on said studfor conveying lubricant to the ball bearings thereon; means leading tothe ball bearing 011 each vane for conveying lubricant thereto; andmeans on said casing and rotor for lubricating said movable vanes.

5. A rotary fluid compressor, exhauster, mover or engine, comprising incombination, a cylindrical casing; a hollow rotor eccentrically mountedtherein; slots in said rotor; a member entering from one side; vanes1110 each connectin rod to one vane' means oscillatably mounted in saidrotor; surfaces on said vanes concentric with the points of oscillationand in sliding contact with oppo site sides of said slots; renewablewearing surfaces in said slides; surfaces on said vanes in slidingcontact with the opposite remaining sides of said slots; membersconnecting said vanes with the cranked part of said shaft, and workingsurfaces on said vanes concentric with the points of connection of saidmembers with said vanes.

6. A rotary fluid compressor, exhauster, mover or engine, comprising incombination a cylindrical casing, a hollow rotor eccentrically mountedtherein, hollow vanes oscil lat-ably mounted on said rotor and meanswithin said rotor retaining the working surfaces 01: said vanes aconstant, predeterminable distance from the working periphery of saidcylinder in all. working positions of said vanes.

7. A. rotary fluid compressor, exhauster, mover or engine, comprising incombination, a cylindrical casing; ball bearings provided on said casingin eccentric relation thereto; a rotor mounted on said ball bearings; aninternal boss 011 said rotor; a ball bearing in said boss; a shaft fixedto said casing and partially supported by said ball bearing; slots insaid rotor; ball bearings in said slots; hollow vanes mounted on saidball bearings; ball hearings on said vanes; a cranked stud on saidshaft; ball bearings on said stud; and connecting rods mounted on theball hearings on the vanes and on the ball hearings on said stud,thereby connecting said vanes to said stud.

Signed at Manchester, in the county of Lancaster, this 6th day ofOctober, 1919.

W. G. HAY.

Witnesses:

ALFRED BOSSHARDT, MARY S. BOSSHARDT.

